Jenway 6850 User Manual

Page 20

SECTION 6 – SPECTRUM

The spectrum measurement mode enables measurements of absorbance or % transmittance over a

range of wavelengths to be performed. The absorbance or % transmittance at each wavelength is

plotted graphically. Post measurement tools such as peaks/valleys, derivatives and spectral points

analysis can be performed. This operating mode can be used to partially characterise a sample.

6.1 SPECTRUM MODE SCREEN

Select the Spectrum Measurement icon on

the toolbar. The Spectrum measurement window

will open.

6.2

METHOD SETUP

The spectrum scan settings can be edited by

selecting the settings icon in the toolbar.

The options that can be changed are:-

1. Scan from (Highest Wavelength)

2. Scan to (Lowest Wavelength)

3. Scan Step (0.5, 1.0, 2.0, 4.0, 5.0nm)

4. Scan Precision (5, 10, 30, 50)

The required options can be entered directly or selected from the available options via the drop down

lists. Select OK to confirm.

6.3

SELECTING THE MEASUREMENT MODE

The required measurement mode can be selected from the available options of Abs and %T by

selecting the or icons on the toolbar.